ASoC: wcd9335: Changes to support CPE session using EC PP path

One of the CPE sessions uses EC(Echo cancellation) PP(Ping-Pong)
path on WCD9335 that is connected to CPE (Codec Processing Engine)
hardware. Configure EC PP path for CPE functionality. This
requires WCD9335 codec to be out of digital core power collapse
without turning on MCLK(Master clock).

CRs-fixed: 1022917
Change-Id: I68200b12fcb316bf36f7c3af2734a094f972da9c
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>